From owner-freebsd-net@freebsd.org Wed May 31 05:29:41 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 422A2A92D47 for ; Wed, 31 May 2017 05:29:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 300C364238 for ; Wed, 31 May 2017 05:29:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v4V5TeSj003032 for ; Wed, 31 May 2017 05:29:41 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 218894] Network dropouts on em(4) due to jumbo cluster failures Date: Wed, 31 May 2017 05:29:40 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-RELEASE X-Bugzilla-Keywords: IntelNetworking X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: kaho@elam.kais.kyoto-u.ac.jp X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc attachments.created Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 May 2017 05:29:41 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218894 Kaho Toshikazu changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kaho@elam.kais.kyoto-u.ac.j | |p --- Comment #1 from Kaho Toshikazu --- Created attachment 183084 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D183084&action= =3Dedit a patch for jumbo frame and others I don't have a trouble denied some packets temporarily but a trouble dropped many packets with jumbo frames. I use 12-current with a similar patch attac= hed this comment, and the patch does not make everything correct but makes better condition. I have three devices, 82574L, I217-V, I218-V. I don't have any trouble for I21[78] regardless with or without the patch when mtu is 1500. With 9k jumbo, without the patch, scp speed is very slow and dev.em.0.rx_overruns increases. On 82574L, dev.em.0.rx_overruns increases without the patch and dev.em.0.mac_stats.recv_no_buff increases with the patch. Above 6k jumbo, scp speed is almost 10kB/s without the patch and the speed is about 10MB/s with the patch. --=20 You are receiving this mail because: You are the assignee for the bug.=